// 打印类属性、方法定义
import store from '@/store/index';
/* eslint-disable */
const Print = function (dom, options) {
  if (!(this instanceof Print)) return new Print (dom, options);

  this.options = this.extend (
    {
      noPrint: '.no-print',
    },
    options
  );

  if (typeof dom === 'string') {
    this.dom = document.querySelector (dom);
  } else {
    this.isDOM (dom);
    this.dom = this.isDOM (dom) ? dom : dom.$el;
  }

  this.init ();
};
Print.prototype = {
  init: function () {
    var content = this.getStyle () + this.getHtml ();
    this.writeIframe (content);
  },
  extend: function (obj, obj2) {
    for (var k in obj2) {
      obj[k] = obj2[k];
    }

    return obj;
  },

  getStyle: function () {
    var str = '', styles = document.querySelectorAll ('style,link');
    for (var i = 0; i < styles.length; i++) {
      str += styles[i].outerHTML;
    }
    str +=
      '<style>' +
      (this.options.noPrint ? this.options.noPrint : '.no-print') +
      '{display:none;}</style>';

    return str;
  },

  getHtml: function () {
    var inputs = document.querySelectorAll ('input');
    var textareas = document.querySelectorAll ('textarea');
    var selects = document.querySelectorAll ('select');

    for (var k = 0; k < inputs.length; k++) {
      if (inputs[k].type == 'checkbox' || inputs[k].type == 'radio') {
        if (inputs[k].checked == true) {
          inputs[k].setAttribute ('checked', 'checked');
        } else {
          inputs[k].removeAttribute ('checked');
        }
      } else if (inputs[k].type == 'text') {
        inputs[k].setAttribute ('value', inputs[k].value);
      } else {
        inputs[k].setAttribute ('value', inputs[k].value);
      }
    }

    for (var k2 = 0; k2 < textareas.length; k2++) {
      if (textareas[k2].type == 'textarea') {
        textareas[k2].innerHTML = textareas[k2].value;
      }
    }

    for (var k3 = 0; k3 < selects.length; k3++) {
      if (selects[k3].type == 'select-one') {
        var child = selects[k3].children;
        for (var i in child) {
          if (child[i].tagName == 'OPTION') {
            if (child[i].selected == true) {
              child[i].setAttribute ('selected', 'selected');
            } else {
              child[i].removeAttribute ('selected');
            }
          }
        }
      }
    }

    return this.dom.outerHTML;
  },

  writeIframe: function (content) {
    var w,
      doc,
      iframe = document.createElement ('iframe'),
      f = document.body.appendChild (iframe);
    iframe.id = 'myIframe';
    //iframe.style = "position:absolute;width:0;height:0;top:-10px;left:-10px;";
    iframe.setAttribute (
      'style',
      'position:absolute;width:0;height:0;top:-10px;left:-10px;'
    );
    w = f.contentWindow || f.contentDocument;
    doc = f.contentDocument || f.contentWindow.document;
    doc.open ();
    doc.write (content);
    doc.close ();
    var _this = this;
    iframe.onload = function () {
      _this.toPrint (w);
      setTimeout (function () {
        document.body.removeChild (iframe);
      }, 100);
    };
  },

  toPrint: function (frameWindow) {
    try {
      setTimeout (function () {
        frameWindow.focus ();
        try {
          if (!frameWindow.document.execCommand ('print', false, null)) {
            frameWindow.print ({scale: 1.5});
          }
        } catch (e) {
          frameWindow.print ({scale: 1.5});
        }
        store.commit ('upPrintShow', false);
        frameWindow.close ();
      }, 10);
    } catch (err) {
      console.log ('err', err);
    }
  },
  isDOM: typeof HTMLElement === 'object'
    ? function (obj) {
        return obj instanceof HTMLElement;
      }
    : function (obj) {
        return (
          obj &&
          typeof obj === 'object' &&
          obj.nodeType === 1 &&
          typeof obj.nodeName === 'string'
        );
      },
};
const MyPlugin = {};
MyPlugin.install = function (Vue, options) {
  // 4. 添加实例方法
  Vue.prototype.$print = Print;
};
export default MyPlugin;
